4” diameter motion sensor (?) on the ceiling of my new apartment. Makes a tiny click when you move under it. Can't remove it, and no idea what it could be for. :
CEILING-MOUNTING MOTION DETECTOR – DM TEC 001 - Dinuy - Reguladores, Knx, Sensores de movimiento
Maxxima 6 in. 1-Light White Motion Sensor Integrated LED Flush Mount MCL-710600W - The Home Depot
CEILING-MOUNTED KNX MOVEMENT DETECTOR - DM KNT 001 - Dinuy - Reguladores, Knx, Sensores de movimiento
Deta 360° Ceiling PIR Movement Activated Sensor - Bunnings Australia
Amazon.com: Infrared Motion Sensor, 12v Wired Indoor Ceiling Mounted 360° Infrared Detector, Low Noise, High Sensitivity, Anti White Light Interference Alarm : Everything Else
Surface Mount PIR Ceiling Occupancy Motion Sensor Detector Light Switch 360 Degree Angle Movement Sensor : Amazon.co.uk: Business, Industry & Science
Ceiling Surface Mount PIR Infrared Motion Sensor
360° ceiling-mounted motion sensor
FLUSH CEILING-MOUNTING MOTION DETECTOR – DM TEC 008 - Dinuy - Reguladores, Knx, Sensores de movimiento
PIR Motion Sensor Switch Ceiling Mounted | Switch Sensor | Ecoshift
CEILING MOTION SENSOR MD-05B7 AC 230V - PIR Detectors - 230V - Delta
IS-280CM - Honeywell Home Intellisense Hardwired 360° Ceiling-Mount Motion Detector
360° motion sensor - IP41 - 8 m - flush ceiling-mounting - PIR technology - cardboard - 0 489 41 - Legrand
360° motion sensor - IP41 - 8 m - flush ceiling-mounting - PIR technology - blister - 0 489 44 - Legrand
Ceiling Mount Occupancy Sensor, Multi-Technology, 360 Degree, 1000 Sq. – Leviton
TRÅDFRI Wireless motion sensor, smart white - IKEA Spain
MOTION SENSOR 360 IP67 BLACK- VOLT FREE (DRY CONTACT) — Faradite-US
Mini Motion Sensor Detector Ceiling Light Switch Recessed 360° | Light fixtures UK
Sensor Switch Small Motion 360º Line Voltage Ceiling Mount Occupancy Sensor with Passive Dual Technology in the Motion Sensors & Detectors department at Lowes.com
Annaror Motion Sensor LED Ceiling Light, 18W Wired Motion Flush Mount Lighting Fixture with Remote, 1800lm Motion Activated Ceiling Light for Closet Laundry Hallway Porch Basement 4000K White - Amazon.com
Ceiling Mount 360 Degree PIR Occupancy Motion Sensor
360° motion sensor - IP20 - 8 m - surface ceiling-mounting - IR technology - 0 489 48 - Legrand
Surface Mount PIR Ceiling Occupancy Motion Sensor Detector Light Switch 360 Degree Angle Movement Sensor : Amazon.co.uk: Business, Industry & Science
